diff --git a/compton.xml b/compton.xml
index 145778fb5cf57cd3ae9100cd2de9b8a699c06d83..657954df333886fd7c9f8815d6eb0e4b1e71278a 100644
--- a/compton.xml
+++ b/compton.xml
@@ -47,7 +47,7 @@
   </display>
 
   <!--include ref="compact/photon_tracker.xml" /-->
-  <!--include ref="compact/photon_calorimeter.xml" /-->
+  <include ref="compact/photon_calorimeter.xml" />
   <include ref="compact/electron_tracker.xml" />
 
   <include ref="compact/beamlineEIC.xml" />